Scorpio basraensis sp. n. from southern Iraq (Scorpiones: Scorpionidae)

Posted by
  Scorpio basraensis sp. n. from southern Iraq (Scorpiones: Scorpionidae) Abstract A new scorpion species, Scorpio basraensis sp. n. , is described and illustrated from Basra Province, southern Iraq. Scorpio basraensis sp. n. is compared with all known species of the genus Scorpio Linnaeus, 1758 occurring in countries surrounding Iraq. The new species can be distinguished by the circular genital operculum in males and the cordiform genital operculum in females (not posteriorly elongated), a densely hirsute body, appendages and metasoma, a distinctly elongated telson vesicle, discrete granules on the external surface of the chela manus that are not flattened, and pectinal tooth counts of 11–13 in males and 9–11 in females. With the description of this species, the number of scorpion species known from Iraq increases to 22, whereas the number of recognized species in the genus Scorpio reaches 33. Yağmur, Ersen A.; Makki, Jafar A.; and Najim, Shurooq A. (2026) " Scorpio basraen...

From sting to pacemaker: a case of complete heart block following yellow scorpion envenomation—a case report

Posted by

 


From sting to pacemaker: a case of complete heart block following yellow scorpion envenomation—a case report

Abstract

Background

Scorpion envenomation is a significant medical concern in tropical and subtropical regions, with cardiovascular complications being among its most severe manifestations. While scorpion venom-induced cardiac dysfunction is well-documented, complete atrioventricular (AV) block is a rare occurrence. This case highlights a unique presentation of complete heart block following a yellow scorpion sting, emphasizing the importance of early recognition and management.

Case presentation

A 56-year-old Middle Eastern (Iranian) male presented to the emergency department with dizziness, syncope, and severe bradycardia following a yellow scorpion sting. Electrocardiographic evaluation revealed a complete atrioventricular block. Laboratory findings indicated elevated cardiac biomarkers, suggesting myocardial injury. Echocardiography demonstrated left ventricular dysfunction without significant structural abnormalities. The patient required temporary transvenous pacing for hemodynamic stabilization and was managed with supportive care, including intravenous fluids, atropine, and continuous cardiac monitoring. Over the course of hospitalization, his conduction abnormality resolved by permanent pacemaker, and he was discharged in stable condition.

Conclusions

This case underscores the potential for severe cardiac complications following scorpion envenomation, particularly conduction disturbances such as complete atrioventricular block. Although rare, healthcare providers should be aware of this life-threatening consequence and initiate prompt intervention to prevent adverse outcomes. Increased awareness and timely management can significantly improve prognosis in affected patients.

Zibaeenezhad, M.J., Alizadeh, Z., Rajabi, A. et al. From sting to pacemaker: a case of complete heart block following yellow scorpion envenomation—a case report. J Med Case Reports 19, 620 (2025). https://doi.org/10.1186/s13256-025-05687-0